Motion and Forces: Master the Fundamentals of Physics

Question 1

Which of the following forces acts without physical contact between objects?

Accepted Answer

Gravity

Answer

Friction

Answer

Tension

Answer

Normal force

Question 2

What is the law of conservation of energy?

Accepted Answer

Energy cannot be created or destroyed, only transferred or transformed.

Answer

Energy can be gained or lost in every energy transformation.

Answer

Energy can be created or destroyed in certain situations.

Answer

Energy is always gained in every energy transformation.

Question 3

An object is moving at a constant velocity. Which of the following statements is true?

Accepted Answer

The net force acting on it is zero.

Answer

It is accelerating.

Answer

Its momentum is increasing.

Answer

It is changing direction.

Question 4

Which of the following is a unit of force in the SI system?

Accepted Answer

Newton

Answer

Joule

Answer

Watt

Answer

Ampere

Question 5

A car is driving down the road at a constant speed. What is the force of friction acting on the car?

Accepted Answer

Zero

Answer

Equal to the force of gravity

Answer

Equal to the force of the engine

Answer

Equal to the force of the wind

Question 6

Which of the following is an example of a contact force?

Accepted Answer

Friction

Answer

Gravity

Answer

Tension

Answer

Magnetism

Question 7

Which of the following is a vector quantity?

Accepted Answer

Force

Answer

Speed

Answer

Temperature

Answer

Mass

Question 8

Which of the following is the SI unit of energy?

Accepted Answer

Joule

Answer

Newton

Answer

Watt

Answer

Ampere

Question 9

Which of the following is the SI unit of power?

Accepted Answer

Watt

Answer

Newton

Answer

Joule

Answer

Ampere

Question 10

According to Newton's Third Law of Motion, every force has an equal and opposite:

Accepted Answer

Force

Answer

Mass

Answer

Acceleration

Answer

Velocity

Question 11

Which of the following is a vector quantity?

Accepted Answer

Velocity

Answer

Speed

Answer

Mass

Answer

Volume

Question 12

What is the acceleration due to gravity on Earth?

Accepted Answer

9.8 m/s²

Answer

10 m/s²

Answer

19.6 m/s²

Answer

20 m/s²

Question 13

Which of the following forces does NOT depend on the mass of the interacting objects?

Accepted Answer

Tension

Answer

Static friction

Answer

Kinetic friction

Answer

Gravity

Question 14

What is the SI unit of force?

Accepted Answer

Newton

Answer

Joule

Answer

Kilogram

Answer

Meter

Question 15

Which of the following best describes Newton's first law of motion?

Accepted Answer

An object at rest stays at rest unless acted upon by an unbalanced force.

Answer

The acceleration of an object is directly proportional to the net force acting on it.

Answer

For every action, there is an equal and opposite reaction.

Answer

Objects in motion tend to stay in motion.

Question 16

A 10 kg object is dropped from a height of 50 meters. What is its velocity just before it hits the ground?

Accepted Answer

31.3 m/s

Answer

10 m/s

Answer

20 m/s

Answer

40 m/s

Question 17

In the International System of Units (SI), the unit of force is

Accepted Answer

Newton

Answer

Pound

Answer

Kilogram

Answer

Joule

Question 18

Which of the following is NOT a contact force?

Accepted Answer

Gravity

Answer

Friction

Answer

Tension

Answer

Normal force

Question 19

A roller coaster is at the top of a hill. As it rolls down the hill, which of the following forms of energy undergoes the greatest change?

Accepted Answer

Gravitational potential energy

Answer

Kinetic energy

Answer

Elastic potential energy

Answer

Chemical energy

Question 20

Which of the following is a vector quantity?

Accepted Answer

Velocity

Answer

Mass

Answer

Speed

Answer

Temperature

Question 21

Which of the following has the greatest momentum?

Accepted Answer

A car traveling at 60 mph

Answer

A truck traveling at 30 mph

Answer

A bicycle traveling at 15 mph

Answer

A person walking at 5 mph

Question 22

Which of the following best describes Newton's first law of motion?

Accepted Answer

An object at rest will stay at rest unless an outside force acts upon it.

Answer

The change in an object's motion is proportional to the force applied to it and in the same direction.

Answer

For every action, there is an equal and opposite reaction.

Question 23

Which force causes objects to fall towards the center of the Earth?

Accepted Answer

Gravity

Answer

Friction

Answer

Magnetism

Question 24

When a ball is thrown straight up, at the highest point of its path, its velocity is:

Accepted Answer

Zero

Answer

Maximum upward

Answer

Maximum downward

Question 25

Which of the following is a renewable energy source?

Accepted Answer

Hydropower

Answer

Fossil fuels

Answer

Natural gas

Question 26

According to Newton's second law of motion, what is the relationship between the acceleration of an object and the force applied to it?

Accepted Answer

The acceleration is directly proportional to the force.

Answer

The acceleration is inversely proportional to the force.

Answer

The acceleration is constant, regardless of the force.

Answer

The acceleration is equal to the force.

Question 27

Which of the following is an example of a balanced force pair?

Accepted Answer

A book resting on a table

Answer

A car accelerating forward

Answer

A ball bouncing off a wall

Answer

A person pushing a door open

Question 28

A rocket is launched into space. What is the primary force that overcomes gravity and propels the rocket upward?

Accepted Answer

Thrust

Answer

Gravity

Answer

Friction

Answer

Air resistance

Question 29

Which of the following is a unit commonly used to measure force?

Accepted Answer

Newton

Answer

Kilogram

Answer

Meter

Answer

Second

Question 30

According to Newton's first law of motion, what happens to an object at rest and an object in motion?

Accepted Answer

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an outside force.

Answer

An object at rest starts moving, and an object in motion stops moving unless acted upon by an outside force.

Answer

An object at rest stays at rest, but an object in motion slows down unless acted upon by an outside force.

Answer

An object at rest starts moving, and an object in motion speeds up unless acted upon by an outside force.

Question 31

What causes objects to fall to the ground?

Accepted Answer

The force of gravity

Answer

The force of magnetism

Answer

The force of friction

Answer

The force of air resistance

Question 32

Which of the following is a measure of the amount of matter in an object?

Accepted Answer

Mass

Answer

Weight

Answer

Volume

Answer

Density

Question 33

What is the force that slows down a moving object called?

Accepted Answer

Friction

Answer

Air resistance

Answer

Gravity

Answer

Magnetic force

Question 34

Which of the following is NOT an example of a balanced force?

Accepted Answer

A car accelerating from rest

Answer

A book sitting on a table

Answer

A tug-of-war between two people using equal force

Answer

A person pushing a wall

Question 35

According to Newton's first law of motion, what happens to an object at rest or in motion if no unbalanced force acts on it?

Accepted Answer

It remains at rest or continues moving at a constant speed and direction.

Answer

It accelerates.

Answer

It changes direction.

Answer

It stops moving.

Question 36

At the highest point of its trajectory, a ball thrown upward experiences:

Accepted Answer

Both zero velocity and zero acceleration.

Answer

Zero velocity.

Answer

Zero acceleration.

Answer

Zero force.

Question 37

When a car moves at a constant speed, the force of friction acting on it:

Accepted Answer

Is equal to the force of air resistance.

Answer

Is stronger than the force of air resistance.

Answer

Is weaker than the force of air resistance.

Answer

Is zero.

Question 38

Which of the following is a quantity that has both magnitude and direction?

Accepted Answer

Velocity

Answer

Speed

Answer

Mass

Answer

Temperature

Question 39

A force of 10 newtons is applied to an object with a mass of 2 kilograms. As a result, the object's acceleration is:

Accepted Answer

2 m/s^2

Answer

5 m/s^2

Answer

10 m/s^2

Answer

20 m/s^2

Question 40

Which of the following is NOT a type of potential energy?

Accepted Answer

Kinetic energy

Answer

Gravitational potential energy

Answer

Elastic potential energy

Answer

Chemical energy

Question 41

In a collision between two objects, the total momentum of the system:

Accepted Answer

Is always conserved.

Answer

Is sometimes conserved.

Answer

Is never conserved.

Answer

Depends on the size of the objects.

Question 42

What is the SI unit of force?

Accepted Answer

Newton

Answer

Joule

Answer

Watt

Answer

Pascal

Question 43

Which unit is used to measure force in the International System of Units (SI)?

Accepted Answer

Newton (N)

Answer

Kilogram (kg)

Answer

Meter (m)

Answer

Joule (J)

Question 44

Which of the following is not a unit of force?

Accepted Answer

Kilogram

Answer

Newton

Answer

Pound

Answer

Pascal

Question 45

A car accelerates when it:

Accepted Answer

Changes its speed or direction

Answer

Moves at a constant speed

Answer

Stops

Answer

Turns a corner

Question 46

Which of Newton's laws of motion states that an object at rest will remain at rest unless acted upon by an outside force?

Accepted Answer

First Law

Answer

Second Law

Answer

Third Law

Answer

Law of Universal Gravitation

Question 47

A ball thrown into the air will eventually come down because of:

Accepted Answer

Gravity

Answer

Friction

Answer

Inertia

Answer

Momentum

Question 48

The force that opposes motion between two surfaces in contact is called:

Accepted Answer

Friction

Answer

Gravity

Answer

Magnetism

Answer

Tension

Question 49

The rate at which an object's velocity changes is called:

Accepted Answer

Acceleration

Answer

Momentum

Answer

Friction

Answer

Gravity

Question 50

Which of the following is the SI unit of energy?

Accepted Answer

Joule

Answer

Newton

Answer

Kilogram

Answer

Meter

Question 51

The law of conservation of energy states that:

Accepted Answer

Energy can be transferred from one form to another

Answer

Energy can be created or destroyed

Answer

Energy can only exist in one form

Answer

Energy is always lost

Question 52

Which of the following is NOT a unit of force?

Accepted Answer

Kilogram

Answer

Newton

Answer

Pound

Answer

Pascal

Question 53

According to Newton's first law of motion, what happens to an object at rest?

Accepted Answer

It will remain at rest unless acted upon by an outside force.

Answer

It will start moving in a straight line with constant speed.

Answer

It will accelerate in the direction of the net force acting on it.

Answer

It will move in a circular path.

Question 54

Which of the following is the force that pulls objects towards each other?

Accepted Answer

Gravity

Answer

Friction

Answer

Tension

Answer

Air resistance

Question 55

What is the formula for calculating work done by a force?

Accepted Answer

Force x Distance

Answer

Force x Time

Answer

Distance x Time

Answer

Mass x Acceleration

Question 56

Which of the following is NOT a type of energy?

Accepted Answer

Power

Answer

Kinetic energy

Answer

Potential energy

Answer

Chemical energy

Question 57

Which of the following is a force that opposes motion?

Accepted Answer

Friction

Answer

Thrust

Answer

Lift

Answer

Gravity

Question 58

The motion of a thrown ball is an example of what type of motion?

Accepted Answer

Projectile motion

Answer

Uniform motion

Answer

Accelerated motion

Answer

Circular motion